ANSI B109.1:2000 pdf download
ANSI B109.1:2000 DIAPHRAGM TYPE GAS DISPLACEMENT METERS (500 CUBIC FOOT PER HOUR CAPACITY AND UNDER) 1.1 ACCURACY, METER. The degree to which a meter correctly measures the volume of gas passing through it, determined by comparing the volume registered by the meter with that registered by the prover. (See Appendix D for methods of expressing …